<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- <div class="main">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div> -->
    <div class="main">
        <section>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </section>
    </div>
</body>
<style>
    /* .main{
        height: 200px;
        background: yellow;
        display: flex;
        justify-content: space-between;
        align-items: flex-end;
        padding: 0 20px;
    }
    .main div{
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: pink;
    } */
    .main{
        height: 200px;
        background: yellow;
        width: 500px;
        overflow: hidden;
        box-sizing: border-box;
        padding: 0 20px;
    }
    .main section{
        width: 600px;
    }
    .main div{
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: pink;
        float: left;
        margin-right: 77px;
    }
</style>
</html>